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X-HELO: calimero.vinschen.de
Date: Wed, 13 Apr 2016 10:11:35 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: multiple definition of `atan2l' on the current Cygwin
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On Apr 13 09:08, Tatsuro MATSUOKA wrote:
> > From: Corinna Vinschen > To: cygwin AT cygwin DOT com
> > Cc:=20
> > Date: 2016/4/12, Tue 22:39
> > Subject: Re: multiple definition of `atan2l' on the current Cygwin
> >=20
> > On Apr 12 17:11, Tatsuro MATSUOKA wrote:
> >>  Hello
> >>  I have updated Cygwin_x86 and Cygwin_x86-64 today.
> >>  In building the gnuplot I have met the error of "multiple definition=
=20
> > of `atan2l'".
> > I can't reproduce this with a simple testcase:
> >=20
> > =C2=A0 $ cat > m.cc <<EOF
> > =C2=A0 #include <math.h>
> >=20
> > =C2=A0 int main ()
> > =C2=A0 {
> > =C2=A0 =C2=A0 atan2l (1.0, 2.0);
> > =C2=A0 }
> > =C2=A0 EOF
> > =C2=A0 $ g++ -g -o m m.cc -lm -lstdc++ -lm -lstdc++
> >=20
> > This builds and links fine for me.
> >=20
> > Is there a chance that gnuplot accidentally provides its own atan2l on
> > Cygwin, despite Cygwin 2.5.0 now providing it per C99?=C2=A0 Or did you=
, by
> > any chance, try to rebuild gnuplot without reconfiguring the build?
> >=20
> > Can you please provide a simple, self-contained testcase?
> Your testcase also works here.
> I tried to make the test but=C2=A0I could not make a simple, self-contain=
ed testcase.
> Instead I copy and paste full compile command and output at the link.

That's not helpful, unfortunately.  What about my other questions?


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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